Table Of ContentLab Manual / Principles of Computer Security CompTIA Security+ and Beyond Lab Manual, Second Edition / Nestler / 174856-3 / FM/
Principles of Computer
Security: CompTIA
Security+™ and Beyond
Lab Manual
Second Edition
Vincent Nestler
Wm. Arthur Conklin
Gregory White
Matthew Hirsch
New York Chicago San Francisco
Lisbon London Madrid Mexico City
Milan New Delhi San Juan
Seoul Singapore Sydney Toronto
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Lab Manual / Principles of Computer Security CompTIA Security+ and Beyond Lab Manual, Second Edition / Nestler / 174856-3 / FM/
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To my mother, for giving me that deep-seated feeling
that comes from knowing a mother’s love.
—Vincent Nestler
To Mike Meyers, forever reminding me of the power
of hands-on learning, and to Tiffany and Susan,
who made those sessions a lot more fun.
—Art Conklin
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About the Authors
Vincent Nestler, M.S. Network Security, Capitol College, and M.A.T. Education, Columbia University, is a net-
work engineering consultant and technical trainer with over 20 years of experience in network administra-
tion and security. Mr. Nestler served as a Data Communications Maintenance Officer in the U.S. Marine Corps
Reserve. During his service, he designed and implemented the training for Marines assigned to the Defense
Information Systems Agency (DISA) Computer Emergency Response Team. He also served as the Assistant
Operations Officer (training) for the Joint Broadcast System, during its transition to DISA. Since 2007, Mr.
Nestler has been integral to training CyberCorps students at the National Information Assurance Training
and Education Center (NIATEC) at Idaho State University. He has developed the curriculum for 2 year, 4 year,
and graduate programs in Networking and Information Assurance. He is currently a Professor of Practice in
Information Assurance at Capitol College. Mr. Nestler’s professional certifications include the Security+,
Network +, and A+.
Wm. Arthur Conklin, Ph.D., is an assistant professor in the College of Technology and Director of the Center
for Information Security Research and Education at the University of Houston. Dr. Conklin has terminal
degrees from the Naval Postgraduate School in electrical engineering and The University of Texas at San Antonio
in business administration. Dr. Conklin’s research interests lie in the areas of software assurance and the
application of systems theory to security issues associated with critical infrastructures. His dissertation was
on the motivating factors for home users in adopting security on their own PCs. He has coauthored four books
on information security and has written and presented numerous conference and academic journal papers.
He has over ten years of teaching experience at the college level and has assisted in building two information
security programs that have been recognized by the NSA and DHS as National Centers of Academic Excellence
in Information Assurance Education. A former U.S. Navy officer, he was also previously the Technical
Director at the Center for Infrastructure Assurance and Security at The University of Texas at San Antonio.
Gregory White, Ph.D., has been involved in computer and network security since 1986. He spent 30 years on
active duty or in the Reserves with the U.S. Air Force. He obtained his Ph.D. in computer science from Texas
A&M University in 1995. His dissertation topic was in the area of computer network intrusion detection, and
he continues to conduct research in this area today. He is currently the Director for the Center for Infrastruc-
ture Assurance and Security (CIAS) and is an associate professor of computer science at The University of
Texas at San Antonio. Dr. White has written and presented numerous articles and conference papers on secu-
rity. He is also the coauthor of five textbooks on computer and network security and has written chapters for
two other security books. Dr. White continues to be active in security research. His current research initiatives
include efforts in high-speed intrusion detection, community infrastructure protection, and visualization of
community and organization security postures.
Matthew Hirsch, M.S. Network Security, Capitol College, B.A. Physics, State University of New York (SUNY)
New Paltz, has worked in the information security operations group for a large financial firm (which prefers
to remain unnamed), in data distribution for firms including Deutsche Bank and Sanwa Securities, and in
systems/network administration for Market Arts Software. Formerly an adjunct professor at Capitol College,
Katharine Gibbs School, and DeVry, Mr. Hirsch also enjoys a long-term association with Dorsai, a New York City
nonprofit ISP/hosting firm.
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About the Series Editor
Corey D. Schou, Ph.D., is the University Professor of Informatics and the Associate Dean of the College of
Business at Idaho State University. He has been involved in establishing computer security and information
assurance training and standards for 25 years. His research interests include information assurance, ethics,
privacy, and collaborative decision making. He was responsible for compiling and editing computer security
standards and training materials for the Committee on National Security Systems (CNSS). Throughout his
career, Dr. Schou has remained an active classroom teacher despite his research and service commitments.
He is the founding director of the Informatics Research Institute and the National Information Assurance
Training and Education Center (NIATEC) that was designated a National Center of Academic Excellence in
Information Assurance Education. In 1996, his research center was cited by the Information Systems Security
Association (ISSA) for Outstanding Contributions to the Security Profession and he was selected as the Edu-
cator of the Year by the Federal Information Systems Security Educators Association (FISSEA). In 1997, the
Masie Institute and TechLearn Consortium recognized his contributions to distance education. In 2001,
Dr. Schou was honored by the International Information Systems Security Certification Consortium [(ISC)2]
with the Tipton award for his work in professionalization of computer security and his development of the
generally accepted common body of knowledge (CBK) used in the certification of information assurance
professionals. Dr. Schou serves as the chair of the Colloquium for Information Systems Security Education
(CISSE). Under his leadership, the Colloquium creates an environment for exchange and dialogue among
leaders in government, industry, and academia concerning information security and information assurance
education. In addition, he is the editor of Information Systems Security and serves on the board of several
professional organizations.
About the Technical Editor
Chris Crayton (CompTIA A+, CompTIA Network+, MCSE) is an author, editor, technical consultant, and
trainer. Mr. Crayton has worked as a computer and networking instructor at Keiser University, where he was
awarded 2001 Teacher of the Year, as network administrator for Protocol, an eCRM company, and as a com-
puter and network specialist at Eastman Kodak. Mr. Crayton has authored several print and online books on
PC repair, CompTIA A+, CompTIA Security+, and Microsoft Windows Vista. Mr. Crayton has served as techni-
cal editor on numerous professional technical titles for many of the leading publishing companies, including
CompTIA A+ All-in-One Exam Guide, and has most recently contributed to Mike Meyers CompTIA A+ Test Bank and Mike
Meyers’ CompTIA Network+ Certification Passport.
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Lab Manual / Principles of Computer Security CompTIA Security+ and Beyond Lab Manual, Second Edition / Nestler / 174856-3 / FM/
Contents at a Glance
PArt I NetWorkING BASICS: HoW Do NetWorkS Work? ........... 1
Chapter 1 Workstation Network Configuration and Connectivity ..... 3
Chapter 2 Network Transports ..................................... 35
Chapter 3 Network Applications ................................... 59
PArt II VulNerABIlItIeS AND tHreAtS: HoW CAN
SySteMS Be CoMProMISeD? ........................... 83
Chapter 4 Penetration Testing ..................................... 85
Chapter 5 Attacks Against Applications ............................ 121
Chapter 6 More Attacks: Trojan Attacks, MITM, Steganography ....... 141
PArt III PreVeNtIoN: HoW Do We PreVeNt HArM to NetWorkS? ... 165
Chapter 7 Hardening the Host Computer ........................... 167
Chapter 8 Securing Network Communications ...................... 191
PArt IV DeteCtIoN AND reSPoNSe: HoW Do We DeteCt
AND reSPoND to AttACkS? ........................... 253
Chapter 9 Preparing for and Detecting Attacks ..................... 255
Chapter 10 Digital Forensics ....................................... 301
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
vii
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Contents
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Additional Resources for Teachers . . . . . . . . . . . . . . . . . . . . . . . . . xx
PArt I NetWorkING BASICS: HoW Do NetWorkS Work? .............. 1
Chapter 1 Workstation Network Configuration and Connectivity ...... 3
Lab 1.1: Network Workstation Client Configuration ..................................... 5
Lab 1.1w: Windows Client Configuration ......................................... 6
Lab 1.1l: Linux Client Configuration ............................................. 11
Lab 1.1 Analysis Questions .................................................... 16
Lab 1.1 Key Terms Quiz ....................................................... 17
Lab 1.2: Computer Name Resolution ................................................ 19
Lab 1.2w: Name Resolution in Windows .......................................... 20
Lab 1.2 Analysis Questions .................................................... 24
Lab 1.2 Key Terms Quiz ....................................................... 25
Lab 1.3: IPv6 Basics ............................................................. 26
Lab 1.3w: Windows IPv6 Basics (netsh/ping6) ..................................... 27
Lab 1.3 Analysis Questions .................................................... 32
Lab 1.3 Key Terms Quiz ....................................................... 32
Chapter 2 Network Transports ...................................... 35
Lab 2.1: Network Communication Analysis ........................................... 36
Lab 2.1w: Network Communication Analysis in Windows ............................. 39
Lab 2.1 Analysis Questions .................................................... 47
Lab 2.1 Key Terms Quiz ....................................................... 47
Lab 2.2: Port Connection Status .................................................... 49
Lab 2.2w: Windows-Based Port Connection Status .................................. 49
Lab 2.2l: Linux-Based Port Connection Status ...................................... 52
Lab 2.2 Analysis Questions .................................................... 56
Lab 2.2 Key Terms Quiz ....................................................... 57
ix
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